I used to be with BT...
...and their service was shockingly bad. They missed appointments more than once, and even used the weather as an excuse. However, I since switched to Sky for broadband and phone. When an engineer dicks about with the exchange and decides to knock off my broadband and/ or phone (it's a busy exchange and this happens a couple of times a year), Sky put in a service call with BT, and an Openreach engineer comes out to fix it. They've turned up on time, every time, and fixed the problem quickly. Same engineers, much better service.
Whether this is because their hefty deals with Sky are more important to them than their own customers, or just because they have actually improved overall, I can't say.
Biting the hand that feeds IT
